Social Security Disability Insurance is a federal program, which means the core rules for qualifying are the same whether you live in Massachusetts, Montana, or Mississippi. But understanding how those rules apply — and where state-level processes come into play — helps you see what the path actually looks like from where you're standing.
The Social Security Administration sets all eligibility standards nationally. However, when SSA receives your application, it sends the medical portion to a state agency called Disability Determination Services (DDS). In Massachusetts, that's the Massachusetts Rehabilitation Commission's DDS division.
DDS reviewers are the ones who evaluate your medical records and decide whether your condition meets SSA's definition of disability. They follow the same federal rules as every other state, but the reviewers, timelines, and local hearing offices are part of Massachusetts's infrastructure.
To qualify for SSDI anywhere in the country, you need to satisfy two separate tests.
SSDI is an insurance program funded through payroll taxes. To be eligible, you must have worked long enough — and recently enough — under Social Security-covered employment.
Work credits are earned based on annual earnings. In recent years, you earn one credit per roughly $1,700 in wages or self-employment income, up to four credits per year (these thresholds adjust annually).
Most applicants need 40 credits total, with 20 earned in the last 10 years before becoming disabled. Younger workers need fewer credits because they've had less time to accumulate them. If you haven't worked enough under Social Security, you won't qualify for SSDI regardless of how severe your condition is — though you may still qualify for SSI (Supplemental Security Income), which has no work history requirement but has income and asset limits instead.
SSA defines disability strictly: you must have a medically determinable physical or mental impairment that prevents you from doing substantial gainful activity (SGA) and is expected to last at least 12 months or result in death.
SGA is the earnings threshold SSA uses to determine whether someone is working at a level that disqualifies them from benefits. For 2024, that figure is $1,550 per month for non-blind individuals (it adjusts annually). If you're earning above that threshold, SSA will generally find you not disabled at the first step of review.
SSA uses a standardized five-step evaluation to decide every SSDI claim:
| Step | Question SSA Asks | If Yes… | If No… |
|---|---|---|---|
| 1 | Are you working above SGA? | Not disabled | Continue |
| 2 | Is your condition severe? | Continue | Not disabled |
| 3 | Does it meet a listed impairment? | Disabled | Continue |
| 4 | Can you do your past work? | Not disabled | Continue |
| 5 | Can you do any other work? | Not disabled | Disabled |
Step 3 involves SSA's "Listing of Impairments" — a specific set of conditions and severity criteria. Meeting a listing means automatic approval at that step. But not meeting a listing doesn't end the claim. Many people are approved at Step 4 or Step 5 based on what's called a Residual Functional Capacity (RFC) assessment — an evaluation of what you can still do despite your limitations.
At Steps 4 and 5, factors like your age, education, and work history carry real weight. Older claimants, particularly those over 50, may have an easier path to approval under SSA's Medical-Vocational Guidelines (the "Grid Rules"), because SSA acknowledges that retraining for new work becomes harder with age.
Most initial SSDI applications are denied. That's not unique to Massachusetts — it's the national pattern. Understanding the stages helps set realistic expectations:
Each stage has strict deadlines — generally 60 days from the date of a denial notice to request the next level of review.
The quality and consistency of your medical evidence is the most important factor at every stage. DDS reviewers and ALJs look for:
Gaps in treatment, inconsistent records, or conditions that are documented but not well-supported can complicate a claim — regardless of how genuinely disabling an impairment feels day to day.
SSDI recipients in Massachusetts become eligible for Medicare after a 24-month waiting period from their first month of entitlement — not from the date of approval. That distinction matters, since back pay often covers months or years before the approval date. Some recipients also qualify for MassHealth (Medicaid) while waiting for Medicare, or become dually eligible once Medicare kicks in.
Back pay is calculated from your established onset date (EOD) — the date SSA determines your disability began — subject to a five-month waiting period that applies at the start of every SSDI claim.
The framework above describes how the system is designed to work. But whether your work record satisfies the credit test, whether your specific condition and its documented severity meets SSA's threshold, how your RFC would be assessed, and where you'd land in the five-step process — those outcomes depend entirely on your individual medical history, employment record, age, and the specifics of your file.
The rules are uniform. The results aren't.
